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authorStefan Metzmacher <metze@samba.org>2022-08-11 10:11:15 +0300
committerJens Axboe <axboe@kernel.dk>2022-08-13 02:01:00 +0300
commitf2ccb5aed7bce1d8b3ed5b3385759a5509663028 (patch)
tree32c78d3576a1e594aab4dca3c36efb6ee5dcd93e /io_uring/uring_cmd.c
parentaddebd9ac9ca0ef8b3764907bf8018e48caffc64 (diff)
downloadlinux-f2ccb5aed7bce1d8b3ed5b3385759a5509663028.tar.xz
io_uring: make io_kiocb_to_cmd() typesafe
We need to make sure (at build time) that struct io_cmd_data is not casted to a structure that's larger. Signed-off-by: Stefan Metzmacher <metze@samba.org> Link: https://lore.kernel.org/r/c024cdf25ae19fc0319d4180e2298bade8ed17b8.1660201408.git.metze@samba.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/uring_cmd.c')
-rw-r--r--io_uring/uring_cmd.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/io_uring/uring_cmd.c b/io_uring/uring_cmd.c
index ee7036f2241f..478e86a9dfaf 100644
--- a/io_uring/uring_cmd.c
+++ b/io_uring/uring_cmd.c
@@ -11,7 +11,7 @@
static void io_uring_cmd_work(struct io_kiocb *req, bool *locked)
{
- struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req);
+ struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd);
ioucmd->task_work_cb(ioucmd);
}
@@ -55,7 +55,7 @@ EXPORT_SYMBOL_GPL(io_uring_cmd_done);
int io_uring_cmd_prep_async(struct io_kiocb *req)
{
- struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req);
+ struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd);
size_t cmd_size;
cmd_size = uring_cmd_pdu_size(req->ctx->flags & IORING_SETUP_SQE128);
@@ -66,7 +66,7 @@ int io_uring_cmd_prep_async(struct io_kiocb *req)
int io_uring_cmd_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
- struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req);
+ struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd);
if (sqe->rw_flags || sqe->__pad1)
return -EINVAL;
@@ -77,7 +77,7 @@ int io_uring_cmd_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
int io_uring_cmd(struct io_kiocb *req, unsigned int issue_flags)
{
- struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req);
+ struct io_uring_cmd *ioucmd = io_kiocb_to_cmd(req, struct io_uring_cmd);
struct io_ring_ctx *ctx = req->ctx;
struct file *file = req->file;
int ret;